/**
 * @version: 2.1.30
 * @author: Dan Grossman http://www.dangrossman.info/
 * @copyright: Copyright (c) 2012-2017 Dan Grossman. All rights reserved.
 * @license: Licensed under the MIT license. See http://www.opensource.org/licenses/mit-license.php
 * @website: http://www.daterangepicker.com/
 */
// Follow the UMD template https://github.com/umdjs/umd/blob/master/templates/returnExportsGlobal.js
(function(root, factory) {
    if (typeof define === "function" && define.amd) {
        // AMD. Make globaly available as well
        define(["moment", "jquery"], function(moment, jquery) {
            if (!jquery.fn) jquery.fn = {}; // webpack server rendering
            return factory(moment, jquery);
        });
    } else if (typeof module === "object" && module.exports) {
        // Node / Browserify
        //isomorphic issue
        var jQuery = typeof window != "undefined" ? window.jQuery : undefined;
        if (!jQuery) {
            jQuery = require("jquery");
            if (!jQuery.fn) jQuery.fn = {};
        }
        var moment =
            typeof window != "undefined" && typeof window.moment != "undefined" ?
            window.moment :
            require("moment");
        module.exports = factory(moment, jQuery);
    } else {
        // Browser globals
        root.daterangepicker = factory(root.moment, root.jQuery);
    }
})(this, function(moment, $) {
    var DateRangePicker = function(element, options, cb) {
        //default settings for options
        this.parentEl = "body";
        this.element = $(element);
        this.startDate = moment().startOf("day");
        this.endDate = moment().endOf("day");
        this.minDate = false;
        this.maxDate = false;
        this.dateLimit = false;
        this.autoApply = false;
        this.singleDatePicker = false;
        this.showDropdowns = false;
        this.showWeekNumbers = false;
        this.showISOWeekNumbers = false;
        this.showCustomRangeLabel = true;
        this.timePicker = false;
        this.timePicker24Hour = false;
        this.timePickerIncrement = 1;
        this.timePickerSeconds = false;
        this.linkedCalendars = true;
        this.autoUpdateInput = true;
        this.alwaysShowCalendars = false;
        this.ranges = {};

        this.opens = "right";
        if (this.element.hasClass("pull-right")) this.opens = "left";

        this.drops = "down";
        if (this.element.hasClass("dropup")) this.drops = "up";

        this.buttonClasses = "btn btn-sm";
        this.applyClass = "btn-success";
        this.cancelClass = "btn-default";

        this.locale = {
            direction: "ltr",
            format: moment.localeData().longDateFormat("L"),
            separator: " - ",
            applyLabel: "Apply",
            cancelLabel: "Cancel",
            weekLabel: "W",
            customRangeLabel: "Custom Range",
            daysOfWeek: moment.weekdaysMin(),
            monthNames: moment.monthsShort(),
            firstDay: moment.localeData().firstDayOfWeek(),
        };

        this.callback = function() {};

        //some state information
        this.isShowing = false;
        this.leftCalendar = {};
        this.rightCalendar = {};

        //custom options from user
        if (typeof options !== "object" || options === null) options = {};

        //allow setting options with data attributes
        //data-api options will be overwritten with custom javascript options
        options = $.extend(this.element.data(), options);

        //html template for the picker UI
        if (
            typeof options.template !== "string" &&
            !(options.template instanceof $)
        )
            options.template =
            '<div class="daterangepicker dropdown-menu">' +
            '<div class="calendar left">' +
            '<div class="daterangepicker_input">' +
            '<input class="input-mini form-control" type="text" name="daterangepicker_start" value="" />' +
            '<i class="fa fa-calendar glyphicon glyphicon-calendar"></i>' +
            '<div class="calendar-time">' +
            "<div></div>" +
            '<i class="fa fa-clock-o glyphicon glyphicon-time"></i>' +
            "</div>" +
            "</div>" +
            '<div class="calendar-table"></div>' +
            "</div>" +
            '<div class="calendar right">' +
            '<div class="daterangepicker_input">' +
            '<input class="input-mini form-control" type="text" name="daterangepicker_end" value="" />' +
            '<i class="fa fa-calendar glyphicon glyphicon-calendar"></i>' +
            '<div class="calendar-time">' +
            "<div></div>" +
            '<i class="fa fa-clock-o glyphicon glyphicon-time"></i>' +
            "</div>" +
            "</div>" +
            '<div class="calendar-table"></div>' +
            "</div>" +
            '<div class="ranges">' +
            '<div class="range_inputs">' +
            '<button class="applyBtn" disabled="disabled" type="button"></button> ' +
            '<button class="cancelBtn" type="button"></button>' +
            "</div>" +
            "</div>" +
            "</div>";

        this.parentEl =
            options.parentEl && $(options.parentEl).length ?
            $(options.parentEl) :
            $(this.parentEl);
        this.container = $(options.template).appendTo(this.parentEl);

        //
        // handle all the possible options overriding defaults
        //

        if (typeof options.locale === "object") {
            if (typeof options.locale.direction === "string")
                this.locale.direction = options.locale.direction;

            if (typeof options.locale.format === "string")
                this.locale.format = options.locale.format;

            if (typeof options.locale.separator === "string")
                this.locale.separator = options.locale.separator;

            if (typeof options.locale.daysOfWeek === "object")
                this.locale.daysOfWeek = options.locale.daysOfWeek.slice();

            if (typeof options.locale.monthNames === "object")
                this.locale.monthNames = options.locale.monthNames.slice();

            if (typeof options.locale.firstDay === "number")
                this.locale.firstDay = options.locale.firstDay;

            if (typeof options.locale.applyLabel === "string")
                this.locale.applyLabel = options.locale.applyLabel;

            if (typeof options.locale.cancelLabel === "string")
                this.locale.cancelLabel = options.locale.cancelLabel;

            if (typeof options.locale.weekLabel === "string")
                this.locale.weekLabel = options.locale.weekLabel;

            if (typeof options.locale.customRangeLabel === "string") {
                //Support unicode chars in the custom range name.
                var elem = document.createElement("textarea");
                elem.innerHTML = options.locale.customRangeLabel;
                var rangeHtml = elem.value;
                this.locale.customRangeLabel = rangeHtml;
            }
        }
        this.container.addClass(this.locale.direction);

        if (typeof options.startDate === "string")
            this.startDate = moment(options.startDate, this.locale.format);

        if (typeof options.endDate === "string")
            this.endDate = moment(options.endDate, this.locale.format);

        if (typeof options.minDate === "string")
            this.minDate = moment(options.minDate, this.locale.format);

        if (typeof options.maxDate === "string")
            this.maxDate = moment(options.maxDate, this.locale.format);

        if (typeof options.startDate === "object")
            this.startDate = moment(options.startDate);

        if (typeof options.endDate === "object")
            this.endDate = moment(options.endDate);

        if (typeof options.minDate === "object")
            this.minDate = moment(options.minDate);

        if (typeof options.maxDate === "object")
            this.maxDate = moment(options.maxDate);

        // sanity check for bad options
        if (this.minDate && this.startDate.isBefore(this.minDate))
            this.startDate = this.minDate.clone();

        // sanity check for bad options
        if (this.maxDate && this.endDate.isAfter(this.maxDate))
            this.endDate = this.maxDate.clone();

        if (typeof options.applyClass === "string")
            this.applyClass = options.applyClass;

        if (typeof options.cancelClass === "string")
            this.cancelClass = options.cancelClass;

        if (typeof options.dateLimit === "object")
            this.dateLimit = options.dateLimit;

        if (typeof options.opens === "string") this.opens = options.opens;

        if (typeof options.drops === "string") this.drops = options.drops;

        if (typeof options.showWeekNumbers === "boolean")
            this.showWeekNumbers = options.showWeekNumbers;

        if (typeof options.showISOWeekNumbers === "boolean")
            this.showISOWeekNumbers = options.showISOWeekNumbers;

        if (typeof options.buttonClasses === "string")
            this.buttonClasses = options.buttonClasses;

        if (typeof options.buttonClasses === "object")
            this.buttonClasses = options.buttonClasses.join(" ");

        if (typeof options.showDropdowns === "boolean")
            this.showDropdowns = options.showDropdowns;

        if (typeof options.showCustomRangeLabel === "boolean")
            this.showCustomRangeLabel = options.showCustomRangeLabel;

        if (typeof options.singleDatePicker === "boolean") {
            this.singleDatePicker = options.singleDatePicker;
            if (this.singleDatePicker) this.endDate = this.startDate.clone();
        }

        if (typeof options.timePicker === "boolean")
            this.timePicker = options.timePicker;

        if (typeof options.timePickerSeconds === "boolean")
            this.timePickerSeconds = options.timePickerSeconds;

        if (typeof options.timePickerIncrement === "number")
            this.timePickerIncrement = options.timePickerIncrement;

        if (typeof options.timePicker24Hour === "boolean")
            this.timePicker24Hour = options.timePicker24Hour;

        if (typeof options.autoApply === "boolean")
            this.autoApply = options.autoApply;

        if (typeof options.autoUpdateInput === "boolean")
            this.autoUpdateInput = options.autoUpdateInput;

        if (typeof options.linkedCalendars === "boolean")
            this.linkedCalendars = options.linkedCalendars;

        if (typeof options.isInvalidDate === "function")
            this.isInvalidDate = options.isInvalidDate;

        if (typeof options.isCustomDate === "function")
            this.isCustomDate = options.isCustomDate;

        if (typeof options.alwaysShowCalendars === "boolean")
            this.alwaysShowCalendars = options.alwaysShowCalendars;

        // update day names order to firstDay
        if (this.locale.firstDay != 0) {
            var iterator = this.locale.firstDay;
            while (iterator > 0) {
                this.locale.daysOfWeek.push(this.locale.daysOfWeek.shift());
                iterator--;
            }
        }

        var start, end, range;

        //if no start/end dates set, check if an input element contains initial values
        if (
            typeof options.startDate === "undefined" &&
            typeof options.endDate === "undefined"
        ) {
            if ($(this.element).is("input[type=text]")) {
                var val = $(this.element).val(),
                    split = val.split(this.locale.separator);

                start = end = null;

                if (split.length == 2) {
                    start = moment(split[0], this.locale.format);
                    end = moment(split[1], this.locale.format);
                } else if (this.singleDatePicker && val !== "") {
                    start = moment(val, this.locale.format);
                    end = moment(val, this.locale.format);
                }
                if (start !== null && end !== null) {
                    this.setStartDate(start);
                    this.setEndDate(end);
                }
            }
        }

        if (typeof options.ranges === "object") {
            for (range in options.ranges) {
                if (typeof options.ranges[range][0] === "string")
                    start = moment(options.ranges[range][0], this.locale.format);
                else start = moment(options.ranges[range][0]);

                if (typeof options.ranges[range][1] === "string")
                    end = moment(options.ranges[range][1], this.locale.format);
                else end = moment(options.ranges[range][1]);

                // If the start or end date exceed those allowed by the minDate or dateLimit
                // options, shorten the range to the allowable period.
                if (this.minDate && start.isBefore(this.minDate))
                    start = this.minDate.clone();

                var maxDate = this.maxDate;
                if (
                    this.dateLimit &&
                    maxDate &&
                    start.clone().add(this.dateLimit).isAfter(maxDate)
                )
                    maxDate = start.clone().add(this.dateLimit);
                if (maxDate && end.isAfter(maxDate)) end = maxDate.clone();

                // If the end of the range is before the minimum or the start of the range is
                // after the maximum, don't display this range option at all.
                if (
                    (this.minDate &&
                        end.isBefore(this.minDate, this.timepicker ? "minute" : "day")) ||
                    (maxDate &&
                        start.isAfter(maxDate, this.timepicker ? "minute" : "day"))
                )
                    continue;

                //Support unicode chars in the range names.
                var elem = document.createElement("textarea");
                elem.innerHTML = range;
                var rangeHtml = elem.value;

                this.ranges[rangeHtml] = [start, end];
            }

            var list = "<ul>";
            for (range in this.ranges) {
                list += '<li data-range-key="' + range + '">' + range + "</li>";
            }
            if (this.showCustomRangeLabel) {
                list +=
                    '<li data-range-key="' +
                    this.locale.customRangeLabel +
                    '">' +
                    this.locale.customRangeLabel +
                    "</li>";
            }
            list += "</ul>";
            this.container.find(".ranges").prepend(list);
        }

        if (typeof cb === "function") {
            this.callback = cb;
        }

        if (!this.timePicker) {
            this.startDate = this.startDate.startOf("day");
            this.endDate = this.endDate.endOf("day");
            this.container.find(".calendar-time").hide();
        }

        //can't be used together for now
        if (this.timePicker && this.autoApply) this.autoApply = false;

        if (this.autoApply && typeof options.ranges !== "object") {
            this.container.find(".ranges").hide();
        } else if (this.autoApply) {
            this.container.find(".applyBtn, .cancelBtn").addClass("hide");
        }

        if (this.singleDatePicker) {
            this.container.addClass("single");
            this.container.find(".calendar.left").addClass("single");
            this.container.find(".calendar.left").show();
            this.container.find(".calendar.right").hide();
            this.container
                .find(".daterangepicker_input input, .daterangepicker_input > i")
                .hide();
            if (this.timePicker) {
                this.container.find(".ranges ul").hide();
            } else {
                this.container.find(".ranges").hide();
            }
        }

        if (
            (typeof options.ranges === "undefined" && !this.singleDatePicker) ||
            this.alwaysShowCalendars
        ) {
            this.container.addClass("show-calendar");
        }

        this.container.addClass("opens" + this.opens);

        //swap the position of the predefined ranges if opens right
        if (typeof options.ranges !== "undefined" && this.opens == "right") {
            this.container
                .find(".ranges")
                .prependTo(this.container.find(".calendar.left").parent());
        }

        //apply CSS classes and labels to buttons
        this.container.find(".applyBtn, .cancelBtn").addClass(this.buttonClasses);
        if (this.applyClass.length)
            this.container.find(".applyBtn").addClass(this.applyClass);
        if (this.cancelClass.length)
            this.container.find(".cancelBtn").addClass(this.cancelClass);
        this.container.find(".applyBtn").html(this.locale.applyLabel);
        this.container.find(".cancelBtn").html(this.locale.cancelLabel);

        //
        // event listeners
        //

        this.container
            .find(".calendar")
            .on("click.daterangepicker", ".prev", $.proxy(this.clickPrev, this))
            .on("click.daterangepicker", ".next", $.proxy(this.clickNext, this))
            .on(
                "mousedown.daterangepicker",
                "td.available",
                $.proxy(this.clickDate, this)
            )
            .on(
                "mouseenter.daterangepicker",
                "td.available",
                $.proxy(this.hoverDate, this)
            )
            .on(
                "mouseleave.daterangepicker",
                "td.available",
                $.proxy(this.updateFormInputs, this)
            )
            .on(
                "change.daterangepicker",
                "select.yearselect",
                $.proxy(this.monthOrYearChanged, this)
            )
            .on(
                "change.daterangepicker",
                "select.monthselect",
                $.proxy(this.monthOrYearChanged, this)
            )
            .on(
                "change.daterangepicker",
                "select.hourselect,select.minuteselect,select.secondselect,select.ampmselect",
                $.proxy(this.timeChanged, this)
            )
            .on(
                "click.daterangepicker",
                ".daterangepicker_input input",
                $.proxy(this.showCalendars, this)
            )
            .on(
                "focus.daterangepicker",
                ".daterangepicker_input input",
                $.proxy(this.formInputsFocused, this)
            )
            .on(
                "blur.daterangepicker",
                ".daterangepicker_input input",
                $.proxy(this.formInputsBlurred, this)
            )
            .on(
                "change.daterangepicker",
                ".daterangepicker_input input",
                $.proxy(this.formInputsChanged, this)
            )
            .on(
                "keydown.daterangepicker",
                ".daterangepicker_input input",
                $.proxy(this.formInputsKeydown, this)
            );

        this.container
            .find(".ranges")
            .on(
                "click.daterangepicker",
                "button.applyBtn",
                $.proxy(this.clickApply, this)
            )
            .on(
                "click.daterangepicker",
                "button.cancelBtn",
                $.proxy(this.clickCancel, this)
            )
            .on("click.daterangepicker", "li", $.proxy(this.clickRange, this))
            .on("mouseenter.daterangepicker", "li", $.proxy(this.hoverRange, this))
            .on(
                "mouseleave.daterangepicker",
                "li",
                $.proxy(this.updateFormInputs, this)
            );

        if (this.element.is("input") || this.element.is("button")) {
            this.element.on({
                "click.daterangepicker": $.proxy(this.show, this),
                "focus.daterangepicker": $.proxy(this.show, this),
                "keyup.daterangepicker": $.proxy(this.elementChanged, this),
                "keydown.daterangepicker": $.proxy(this.keydown, this), //IE 11 compatibility
            });
        } else {
            this.element.on("click.daterangepicker", $.proxy(this.toggle, this));
            this.element.on("keydown.daterangepicker", $.proxy(this.toggle, this));
        }

        //
        // if attached to a text input, set the initial value
        //

        if (
            this.element.is("input") &&
            !this.singleDatePicker &&
            this.autoUpdateInput
        ) {
            this.element.val(
                this.startDate.format(this.locale.format) +
                this.locale.separator +
                this.endDate.format(this.locale.format)
            );
            this.element.trigger("change");
        } else if (this.element.is("input") && this.autoUpdateInput) {
            this.element.val(this.startDate.format(this.locale.format));
            this.element.trigger("change");
        }
    };

    DateRangePicker.prototype = {
        constructor: DateRangePicker,

        setStartDate: function(startDate) {
            if (typeof startDate === "string")
                this.startDate = moment(startDate, this.locale.format);

            if (typeof startDate === "object") this.startDate = moment(startDate);

            if (!this.timePicker) this.startDate = this.startDate.startOf("day");

            if (this.timePicker && this.timePickerIncrement)
                this.startDate.minute(
                    Math.round(this.startDate.minute() / this.timePickerIncrement) *
                    this.timePickerIncrement
                );

            if (this.minDate && this.startDate.isBefore(this.minDate)) {
                this.startDate = this.minDate.clone();
                if (this.timePicker && this.timePickerIncrement)
                    this.startDate.minute(
                        Math.round(this.startDate.minute() / this.timePickerIncrement) *
                        this.timePickerIncrement
                    );
            }

            if (this.maxDate && this.startDate.isAfter(this.maxDate)) {
                this.startDate = this.maxDate.clone();
                if (this.timePicker && this.timePickerIncrement)
                    this.startDate.minute(
                        Math.floor(this.startDate.minute() / this.timePickerIncrement) *
                        this.timePickerIncrement
                    );
            }

            if (!this.isShowing) this.updateElement();

            this.updateMonthsInView();
        },

        setEndDate: function(endDate) {
            if (typeof endDate === "string")
                this.endDate = moment(endDate, this.locale.format);

            if (typeof endDate === "object") this.endDate = moment(endDate);

            if (!this.timePicker)
                this.endDate = this.endDate
                .add(1, "d")
                .startOf("day")
                .subtract(1, "second");

            if (this.timePicker && this.timePickerIncrement)
                this.endDate.minute(
                    Math.round(this.endDate.minute() / this.timePickerIncrement) *
                    this.timePickerIncrement
                );

            if (this.endDate.isBefore(this.startDate))
                this.endDate = this.startDate.clone();

            if (this.maxDate && this.endDate.isAfter(this.maxDate))
                this.endDate = this.maxDate.clone();

            if (
                this.dateLimit &&
                this.startDate.clone().add(this.dateLimit).isBefore(this.endDate)
            )
                this.endDate = this.startDate.clone().add(this.dateLimit);

            this.previousRightTime = this.endDate.clone();

            if (!this.isShowing) this.updateElement();

            this.updateMonthsInView();
        },

        isInvalidDate: function() {
            return false;
        },

        isCustomDate: function() {
            return false;
        },

        updateView: function() {
            if (this.timePicker) {
                this.renderTimePicker("left");
                this.renderTimePicker("right");
                if (!this.endDate) {
                    this.container
                        .find(".right .calendar-time select")
                        .attr("disabled", "disabled")
                        .addClass("disabled");
                } else {
                    this.container
                        .find(".right .calendar-time select")
                        .removeAttr("disabled")
                        .removeClass("disabled");
                }
            }
            if (this.endDate) {
                this.container
                    .find('input[name="daterangepicker_end"]')
                    .removeClass("active");
                this.container
                    .find('input[name="daterangepicker_start"]')
                    .addClass("active");
            } else {
                this.container
                    .find('input[name="daterangepicker_end"]')
                    .addClass("active");
                this.container
                    .find('input[name="daterangepicker_start"]')
                    .removeClass("active");
            }
            this.updateMonthsInView();
            this.updateCalendars();
            this.updateFormInputs();
        },

        updateMonthsInView: function() {
            if (this.endDate) {
                //if both dates are visible already, do nothing
                if (!this.singleDatePicker &&
                    this.leftCalendar.month &&
                    this.rightCalendar.month &&
                    (this.startDate.format("YYYY-MM") ==
                        this.leftCalendar.month.format("YYYY-MM") ||
                        this.startDate.format("YYYY-MM") ==
                        this.rightCalendar.month.format("YYYY-MM")) &&
                    (this.endDate.format("YYYY-MM") ==
                        this.leftCalendar.month.format("YYYY-MM") ||
                        this.endDate.format("YYYY-MM") ==
                        this.rightCalendar.month.format("YYYY-MM"))
                ) {
                    return;
                }

                this.leftCalendar.month = this.startDate.clone().date(2);
                if (!this.linkedCalendars &&
                    (this.endDate.month() != this.startDate.month() ||
                        this.endDate.year() != this.startDate.year())
                ) {
                    this.rightCalendar.month = this.endDate.clone().date(2);
                } else {
                    this.rightCalendar.month = this.startDate
                        .clone()
                        .date(2)
                        .add(1, "month");
                }
            } else {
                if (
                    this.leftCalendar.month.format("YYYY-MM") !=
                    this.startDate.format("YYYY-MM") &&
                    this.rightCalendar.month.format("YYYY-MM") !=
                    this.startDate.format("YYYY-MM")
                ) {
                    this.leftCalendar.month = this.startDate.clone().date(2);
                    this.rightCalendar.month = this.startDate
                        .clone()
                        .date(2)
                        .add(1, "month");
                }
            }
            if (
                this.maxDate &&
                this.linkedCalendars &&
                !this.singleDatePicker &&
                this.rightCalendar.month > this.maxDate
            ) {
                this.rightCalendar.month = this.maxDate.clone().date(2);
                this.leftCalendar.month = this.maxDate
                    .clone()
                    .date(2)
                    .subtract(1, "month");
            }
        },

        updateCalendars: function() {
            if (this.timePicker) {
                var hour, minute, second;
                if (this.endDate) {
                    hour = parseInt(this.container.find(".left .hourselect").val(), 10);
                    minute = parseInt(
                        this.container.find(".left .minuteselect").val(),
                        10
                    );
                    second = this.timePickerSeconds ?
                        parseInt(this.container.find(".left .secondselect").val(), 10) :
                        0;
                    if (!this.timePicker24Hour) {
                        var ampm = this.container.find(".left .ampmselect").val();
                        if (ampm === "PM" && hour < 12) hour += 12;
                        if (ampm === "AM" && hour === 12) hour = 0;
                    }
                } else {
                    hour = parseInt(this.container.find(".right .hourselect").val(), 10);
                    minute = parseInt(
                        this.container.find(".right .minuteselect").val(),
                        10
                    );
                    second = this.timePickerSeconds ?
                        parseInt(this.container.find(".right .secondselect").val(), 10) :
                        0;
                    if (!this.timePicker24Hour) {
                        var ampm = this.container.find(".right .ampmselect").val();
                        if (ampm === "PM" && hour < 12) hour += 12;
                        if (ampm === "AM" && hour === 12) hour = 0;
                    }
                }
                this.leftCalendar.month.hour(hour).minute(minute).second(second);
                this.rightCalendar.month.hour(hour).minute(minute).second(second);
            }

            this.renderCalendar("left");
            this.renderCalendar("right");

            //highlight any predefined range matching the current start and end dates
            this.container.find(".ranges li").removeClass("active");
            if (this.endDate == null) return;

            this.calculateChosenLabel();
        },

        renderCalendar: function(side) {
            //
            // Build the matrix of dates that will populate the calendar
            //

            var calendar = side == "left" ? this.leftCalendar : this.rightCalendar;
            var month = calendar.month.month();
            var year = calendar.month.year();
            var hour = calendar.month.hour();
            var minute = calendar.month.minute();
            var second = calendar.month.second();
            var daysInMonth = moment([year, month]).daysInMonth();
            var firstDay = moment([year, month, 1]);
            var lastDay = moment([year, month, daysInMonth]);
            var lastMonth = moment(firstDay).subtract(1, "month").month();
            var lastYear = moment(firstDay).subtract(1, "month").year();
            var daysInLastMonth = moment([lastYear, lastMonth]).daysInMonth();
            var dayOfWeek = firstDay.day();

            //initialize a 6 rows x 7 columns array for the calendar
            var calendar = [];
            calendar.firstDay = firstDay;
            calendar.lastDay = lastDay;

            for (var i = 0; i < 6; i++) {
                calendar[i] = [];
            }

            //populate the calendar with date objects
            var startDay = daysInLastMonth - dayOfWeek + this.locale.firstDay + 1;
            if (startDay > daysInLastMonth) startDay -= 7;

            if (dayOfWeek == this.locale.firstDay) startDay = daysInLastMonth - 6;

            var curDate = moment([lastYear, lastMonth, startDay, 12, minute, second]);

            var col, row;
            for (
                var i = 0, col = 0, row = 0; i < 42; i++, col++, curDate = moment(curDate).add(24, "hour")
            ) {
                if (i > 0 && col % 7 === 0) {
                    col = 0;
                    row++;
                }
                calendar[row][col] = curDate
                    .clone()
                    .hour(hour)
                    .minute(minute)
                    .second(second);
                curDate.hour(12);

                if (
                    this.minDate &&
                    calendar[row][col].format("YYYY-MM-DD") ==
                    this.minDate.format("YYYY-MM-DD") &&
                    calendar[row][col].isBefore(this.minDate) &&
                    side == "left"
                ) {
                    calendar[row][col] = this.minDate.clone();
                }

                if (
                    this.maxDate &&
                    calendar[row][col].format("YYYY-MM-DD") ==
                    this.maxDate.format("YYYY-MM-DD") &&
                    calendar[row][col].isAfter(this.maxDate) &&
                    side == "right"
                ) {
                    calendar[row][col] = this.maxDate.clone();
                }
            }

            //make the calendar object available to hoverDate/clickDate
            if (side == "left") {
                this.leftCalendar.calendar = calendar;
            } else {
                this.rightCalendar.calendar = calendar;
            }

            //
            // Display the calendar
            //

            var minDate = side == "left" ? this.minDate : this.startDate;
            var maxDate = this.maxDate;
            var selected = side == "left" ? this.startDate : this.endDate;
            var arrow =
                this.locale.direction == "ltr" ? { left: "chevron-left", right: "chevron-right" } : { left: "chevron-right", right: "chevron-left" };

            var html = '<table class="table-condensed">';
            html += "<thead>";
            html += "<tr>";

            // add empty cell for week number
            if (this.showWeekNumbers || this.showISOWeekNumbers) html += "<th></th>";

            if (
                (!minDate || minDate.isBefore(calendar.firstDay)) &&
                (!this.linkedCalendars || side == "left")
            ) {
                html +=
                    '<th class="prev available"><i class="fa fa-' +
                    arrow.left +
                    " glyphicon glyphicon-" +
                    arrow.left +
                    '"></i></th>';
            } else {
                html += "<th></th>";
            }

            var dateHtml =
                this.locale.monthNames[calendar[1][1].month()] +
                calendar[1][1].format(" YYYY");

            if (this.showDropdowns) {
                var currentMonth = calendar[1][1].month();
                var currentYear = calendar[1][1].year();
                var maxYear = (maxDate && maxDate.year()) || currentYear + 5;
                var minYear = (minDate && minDate.year()) || currentYear - 50;
                var inMinYear = currentYear == minYear;
                var inMaxYear = currentYear == maxYear;

                var monthHtml = '<select class="monthselect">';
                for (var m = 0; m < 12; m++) {
                    if (
                        (!inMinYear || m >= minDate.month()) &&
                        (!inMaxYear || m <= maxDate.month())
                    ) {
                        monthHtml +=
                            "<option value='" +
                            m +
                            "'" +
                            (m === currentMonth ? " selected='selected'" : "") +
                            ">" +
                            this.locale.monthNames[m] +
                            "</option>";
                    } else {
                        monthHtml +=
                            "<option value='" +
                            m +
                            "'" +
                            (m === currentMonth ? " selected='selected'" : "") +
                            " disabled='disabled'>" +
                            this.locale.monthNames[m] +
                            "</option>";
                    }
                }
                monthHtml += "</select>";

                var yearHtml = '<select class="yearselect">';
                for (var y = minYear; y <= maxYear; y++) {
                    yearHtml +=
                        '<option value="' +
                        y +
                        '"' +
                        (y === currentYear ? ' selected="selected"' : "") +
                        ">" +
                        y +
                        "</option>";
                }
                yearHtml += "</select>";

                dateHtml = monthHtml + yearHtml;
            }

            html += '<th colspan="5" class="month">' + dateHtml + "</th>";
            if (
                (!maxDate || maxDate.isAfter(calendar.lastDay)) &&
                (!this.linkedCalendars || side == "right" || this.singleDatePicker)
            ) {
                html +=
                    '<th class="next available"><i class="fa fa-' +
                    arrow.right +
                    " glyphicon glyphicon-" +
                    arrow.right +
                    '"></i></th>';
            } else {
                html += "<th></th>";
            }

            html += "</tr>";
            html += "<tr>";

            // add week number label
            if (this.showWeekNumbers || this.showISOWeekNumbers)
                html += '<th class="week">' + this.locale.weekLabel + "</th>";

            $.each(this.locale.daysOfWeek, function(index, dayOfWeek) {
                html += "<th>" + dayOfWeek + "</th>";
            });

            html += "</tr>";
            html += "</thead>";
            html += "<tbody>";

            //adjust maxDate to reflect the dateLimit setting in order to
            //grey out end dates beyond the dateLimit
            if (this.endDate == null && this.dateLimit) {
                var maxLimit = this.startDate.clone().add(this.dateLimit).endOf("day");
                if (!maxDate || maxLimit.isBefore(maxDate)) {
                    maxDate = maxLimit;
                }
            }

            for (var row = 0; row < 6; row++) {
                html += "<tr>";

                // add week number
                if (this.showWeekNumbers)
                    html += '<td class="week">' + calendar[row][0].week() + "</td>";
                else if (this.showISOWeekNumbers)
                    html += '<td class="week">' + calendar[row][0].isoWeek() + "</td>";

                for (var col = 0; col < 7; col++) {
                    var classes = [];

                    //highlight today's date
                    if (calendar[row][col].isSame(new Date(), "day"))
                        classes.push("today");

                    //highlight weekends
                    if (calendar[row][col].isoWeekday() > 5) classes.push("weekend");

                    //grey out the dates in other months displayed at beginning and end of this calendar
                    if (calendar[row][col].month() != calendar[1][1].month())
                        classes.push("off");

                    //don't allow selection of dates before the minimum date
                    if (this.minDate && calendar[row][col].isBefore(this.minDate, "day"))
                        classes.push("off", "disabled");

                    //don't allow selection of dates after the maximum date
                    if (maxDate && calendar[row][col].isAfter(maxDate, "day"))
                        classes.push("off", "disabled");

                    //don't allow selection of date if a custom function decides it's invalid
                    if (this.isInvalidDate(calendar[row][col]))
                        classes.push("off", "disabled");

                    //highlight the currently selected start date
                    if (
                        calendar[row][col].format("YYYY-MM-DD") ==
                        this.startDate.format("YYYY-MM-DD")
                    )
                        classes.push("active", "start-date");

                    //highlight the currently selected end date
                    if (
                        this.endDate != null &&
                        calendar[row][col].format("YYYY-MM-DD") ==
                        this.endDate.format("YYYY-MM-DD")
                    )
                        classes.push("active", "end-date");

                    //highlight dates in-between the selected dates
                    if (
                        this.endDate != null &&
                        calendar[row][col] > this.startDate &&
                        calendar[row][col] < this.endDate
                    )
                        classes.push("in-range");

                    //apply custom classes for this date
                    var isCustom = this.isCustomDate(calendar[row][col]);
                    if (isCustom !== false) {
                        if (typeof isCustom === "string") classes.push(isCustom);
                        else Array.prototype.push.apply(classes, isCustom);
                    }

                    var cname = "",
                        disabled = false;
                    for (var i = 0; i < classes.length; i++) {
                        cname += classes[i] + " ";
                        if (classes[i] == "disabled") disabled = true;
                    }
                    if (!disabled) cname += "available";

                    html +=
                        '<td class="' +
                        cname.replace(/^\s+|\s+$/g, "") +
                        '" data-title="' +
                        "r" +
                        row +
                        "c" +
                        col +
                        '">' +
                        calendar[row][col].date() +
                        "</td>";
                }
                html += "</tr>";
            }

            html += "</tbody>";
            html += "</table>";

            this.container.find(".calendar." + side + " .calendar-table").html(html);
        },

        renderTimePicker: function(side) {
            // Don't bother updating the time picker if it's currently disabled
            // because an end date hasn't been clicked yet
            if (side == "right" && !this.endDate) return;

            var html,
                selected,
                minDate,
                maxDate = this.maxDate;

            if (
                this.dateLimit &&
                (!this.maxDate ||
                    this.startDate.clone().add(this.dateLimit).isAfter(this.maxDate))
            )
                maxDate = this.startDate.clone().add(this.dateLimit);

            if (side == "left") {
                selected = this.startDate.clone();
                minDate = this.minDate;
            } else if (side == "right") {
                selected = this.endDate.clone();
                minDate = this.startDate;

                //Preserve the time already selected
                var timeSelector = this.container.find(
                    ".calendar.right .calendar-time div"
                );
                if (timeSelector.html() != "") {
                    selected.hour(
                        timeSelector.find(".hourselect option:selected").val() ||
                        selected.hour()
                    );
                    selected.minute(
                        timeSelector.find(".minuteselect option:selected").val() ||
                        selected.minute()
                    );
                    selected.second(
                        timeSelector.find(".secondselect option:selected").val() ||
                        selected.second()
                    );

                    if (!this.timePicker24Hour) {
                        var ampm = timeSelector.find(".ampmselect option:selected").val();
                        if (ampm === "PM" && selected.hour() < 12)
                            selected.hour(selected.hour() + 12);
                        if (ampm === "AM" && selected.hour() === 12) selected.hour(0);
                    }
                }

                if (selected.isBefore(this.startDate))
                    selected = this.startDate.clone();

                if (maxDate && selected.isAfter(maxDate)) selected = maxDate.clone();
            }

            //
            // hours
            //

            html = '<select class="hourselect">';

            var start = this.timePicker24Hour ? 0 : 1;
            var end = this.timePicker24Hour ? 23 : 12;

            for (var i = start; i <= end; i++) {
                var i_in_24 = i;
                if (!this.timePicker24Hour)
                    i_in_24 =
                    selected.hour() >= 12 ? (i == 12 ? 12 : i + 12) : i == 12 ? 0 : i;

                var time = selected.clone().hour(i_in_24);
                var disabled = false;
                if (minDate && time.minute(59).isBefore(minDate)) disabled = true;
                if (maxDate && time.minute(0).isAfter(maxDate)) disabled = true;

                if (i_in_24 == selected.hour() && !disabled) {
                    html +=
                        '<option value="' + i + '" selected="selected">' + i + "</option>";
                } else if (disabled) {
                    html +=
                        '<option value="' +
                        i +
                        '" disabled="disabled" class="disabled">' +
                        i +
                        "</option>";
                } else {
                    html += '<option value="' + i + '">' + i + "</option>";
                }
            }

            html += "</select> ";

            //
            // minutes
            //

            html += ': <select class="minuteselect">';

            for (var i = 0; i < 60; i += this.timePickerIncrement) {
                var padded = i < 10 ? "0" + i : i;
                var time = selected.clone().minute(i);

                var disabled = false;
                if (minDate && time.second(59).isBefore(minDate)) disabled = true;
                if (maxDate && time.second(0).isAfter(maxDate)) disabled = true;

                if (selected.minute() == i && !disabled) {
                    html +=
                        '<option value="' +
                        i +
                        '" selected="selected">' +
                        padded +
                        "</option>";
                } else if (disabled) {
                    html +=
                        '<option value="' +
                        i +
                        '" disabled="disabled" class="disabled">' +
                        padded +
                        "</option>";
                } else {
                    html += '<option value="' + i + '">' + padded + "</option>";
                }
            }

            html += "</select> ";

            //
            // seconds
            //

            if (this.timePickerSeconds) {
                html += ': <select class="secondselect">';

                for (var i = 0; i < 60; i++) {
                    var padded = i < 10 ? "0" + i : i;
                    var time = selected.clone().second(i);

                    var disabled = false;
                    if (minDate && time.isBefore(minDate)) disabled = true;
                    if (maxDate && time.isAfter(maxDate)) disabled = true;

                    if (selected.second() == i && !disabled) {
                        html +=
                            '<option value="' +
                            i +
                            '" selected="selected">' +
                            padded +
                            "</option>";
                    } else if (disabled) {
                        html +=
                            '<option value="' +
                            i +
                            '" disabled="disabled" class="disabled">' +
                            padded +
                            "</option>";
                    } else {
                        html += '<option value="' + i + '">' + padded + "</option>";
                    }
                }

                html += "</select> ";
            }

            //
            // AM/PM
            //

            if (!this.timePicker24Hour) {
                html += '<select class="ampmselect">';

                var am_html = "";
                var pm_html = "";

                if (
                    minDate &&
                    selected.clone().hour(12).minute(0).second(0).isBefore(minDate)
                )
                    am_html = ' disabled="disabled" class="disabled"';

                if (
                    maxDate &&
                    selected.clone().hour(0).minute(0).second(0).isAfter(maxDate)
                )
                    pm_html = ' disabled="disabled" class="disabled"';

                if (selected.hour() >= 12) {
                    html +=
                        '<option value="AM"' +
                        am_html +
                        '>AM</option><option value="PM" selected="selected"' +
                        pm_html +
                        ">PM</option>";
                } else {
                    html +=
                        '<option value="AM" selected="selected"' +
                        am_html +
                        '>AM</option><option value="PM"' +
                        pm_html +
                        ">PM</option>";
                }

                html += "</select>";
            }

            this.container
                .find(".calendar." + side + " .calendar-time div")
                .html(html);
        },

        updateFormInputs: function() {
            //ignore mouse movements while an above-calendar text input has focus
            if (
                this.container.find("input[name=daterangepicker_start]").is(":focus") ||
                this.container.find("input[name=daterangepicker_end]").is(":focus")
            )
                return;

            this.container
                .find("input[name=daterangepicker_start]")
                .val(this.startDate.format(this.locale.format));
            if (this.endDate)
                this.container
                .find("input[name=daterangepicker_end]")
                .val(this.endDate.format(this.locale.format));

            if (
                this.singleDatePicker ||
                (this.endDate &&
                    (this.startDate.isBefore(this.endDate) ||
                        this.startDate.isSame(this.endDate)))
            ) {
                this.container.find("button.applyBtn").removeAttr("disabled");
            } else {
                this.container.find("button.applyBtn").attr("disabled", "disabled");
            }
        },

        move: function() {
            var parentOffset = { top: 0, left: 0 },
                containerTop;
            var parentRightEdge = $(window).width();
            if (!this.parentEl.is("body")) {
                parentOffset = {
                    top: this.parentEl.offset().top - this.parentEl.scrollTop(),
                    left: this.parentEl.offset().left - this.parentEl.scrollLeft(),
                };
                parentRightEdge =
                    this.parentEl[0].clientWidth + this.parentEl.offset().left;
            }

            if (this.drops == "up")
                containerTop =
                this.element.offset().top -
                this.container.outerHeight() -
                parentOffset.top;
            else
                containerTop =
                this.element.offset().top +
                this.element.outerHeight() -
                parentOffset.top;
            this.container[this.drops == "up" ? "addClass" : "removeClass"]("dropup");

            if (this.opens == "left") {
                this.container.css({
                    top: containerTop,
                    right: parentRightEdge -
                        this.element.offset().left -
                        this.element.outerWidth(),
                    left: "auto",
                });
                if (this.container.offset().left < 0) {
                    this.container.css({
                        right: "auto",
                        left: 9,
                    });
                }
            } else if (this.opens == "center") {
                this.container.css({
                    top: containerTop,
                    left: this.element.offset().left -
                        parentOffset.left +
                        this.element.outerWidth() / 2 -
                        this.container.outerWidth() / 2,
                    right: "auto",
                });
                if (this.container.offset().left < 0) {
                    this.container.css({
                        right: "auto",
                        left: 9,
                    });
                }
            } else {
                this.container.css({
                    top: containerTop,
                    left: this.element.offset().left - parentOffset.left,
                    right: "auto",
                });
                if (
                    this.container.offset().left + this.container.outerWidth() >
                    $(window).width()
                ) {
                    this.container.css({
                        left: "auto",
                        right: 0,
                    });
                }
            }
        },

        show: function(e) {
            if (this.isShowing) return;

            // Create a click proxy that is private to this instance of datepicker, for unbinding
            this._outsideClickProxy = $.proxy(function(e) {
                this.outsideClick(e);
            }, this);

            // Bind global datepicker mousedown for hiding and
            $(document)
                .on("mousedown.daterangepicker", this._outsideClickProxy)
                // also support mobile devices
                .on("touchend.daterangepicker", this._outsideClickProxy)
                // also explicitly play nice with Bootstrap dropdowns, which stopPropagation when clicking them
                .on(
                    "click.daterangepicker",
                    "[data-toggle=dropdown]",
                    this._outsideClickProxy
                )
                // and also close when focus changes to outside the picker (eg. tabbing between controls)
                .on("focusin.daterangepicker", this._outsideClickProxy);

            // Reposition the picker if the window is resized while it's open
            $(window).on(
                "resize.daterangepicker",
                $.proxy(function(e) {
                    this.move(e);
                }, this)
            );

            this.oldStartDate = this.startDate.clone();
            this.oldEndDate = this.endDate.clone();
            this.previousRightTime = this.endDate.clone();

            this.updateView();
            this.container.show();
            this.move();
            this.element.trigger("show.daterangepicker", this);
            this.isShowing = true;
        },

        hide: function(e) {
            if (!this.isShowing) return;

            //incomplete date selection, revert to last values
            if (!this.endDate) {
                this.startDate = this.oldStartDate.clone();
                this.endDate = this.oldEndDate.clone();
            }

            //if a new date range was selected, invoke the user callback function
            if (!this.startDate.isSame(this.oldStartDate) ||
                !this.endDate.isSame(this.oldEndDate)
            )
                this.callback(this.startDate, this.endDate, this.chosenLabel);

            //if picker is attached to a text input, update it
            this.updateElement();

            $(document).off(".daterangepicker");
            $(window).off(".daterangepicker");
            this.container.hide();
            this.element.trigger("hide.daterangepicker", this);
            this.isShowing = false;
        },

        toggle: function(e) {
            if (this.isShowing) {
                this.hide();
            } else {
                this.show();
            }
        },

        outsideClick: function(e) {
            var target = $(e.target);
            // if the page is clicked anywhere except within the daterangerpicker/button
            // itself then call this.hide()
            if (
                // ie modal dialog fix
                e.type == "focusin" ||
                target.closest(this.element).length ||
                target.closest(this.container).length ||
                target.closest(".calendar-table").length
            )
                return;
            this.hide();
            this.element.trigger("outsideClick.daterangepicker", this);
        },

        showCalendars: function() {
            this.container.addClass("show-calendar");
            this.move();
            this.element.trigger("showCalendar.daterangepicker", this);
        },

        hideCalendars: function() {
            this.container.removeClass("show-calendar");
            this.element.trigger("hideCalendar.daterangepicker", this);
        },

        hoverRange: function(e) {
            //ignore mouse movements while an above-calendar text input has focus
            if (
                this.container.find("input[name=daterangepicker_start]").is(":focus") ||
                this.container.find("input[name=daterangepicker_end]").is(":focus")
            )
                return;

            var label = e.target.getAttribute("data-range-key");

            if (label == this.locale.customRangeLabel) {
                this.updateView();
            } else {
                var dates = this.ranges[label];
                this.container
                    .find("input[name=daterangepicker_start]")
                    .val(dates[0].format(this.locale.format));
                this.container
                    .find("input[name=daterangepicker_end]")
                    .val(dates[1].format(this.locale.format));
            }
        },

        clickRange: function(e) {
            var label = e.target.getAttribute("data-range-key");
            this.chosenLabel = label;
            if (label == this.locale.customRangeLabel) {
                this.showCalendars();
            } else {
                var dates = this.ranges[label];
                this.startDate = dates[0];
                this.endDate = dates[1];

                if (!this.timePicker) {
                    this.startDate.startOf("day");
                    this.endDate.endOf("day");
                }

                if (!this.alwaysShowCalendars) this.hideCalendars();
                this.clickApply();
            }
        },

        clickPrev: function(e) {
            var cal = $(e.target).parents(".calendar");
            if (cal.hasClass("left")) {
                this.leftCalendar.month.subtract(1, "month");
                if (this.linkedCalendars) this.rightCalendar.month.subtract(1, "month");
            } else {
                this.rightCalendar.month.subtract(1, "month");
            }
            this.updateCalendars();
        },

        clickNext: function(e) {
            var cal = $(e.target).parents(".calendar");
            if (cal.hasClass("left")) {
                this.leftCalendar.month.add(1, "month");
            } else {
                this.rightCalendar.month.add(1, "month");
                if (this.linkedCalendars) this.leftCalendar.month.add(1, "month");
            }
            this.updateCalendars();
        },

        hoverDate: function(e) {
            //ignore mouse movements while an above-calendar text input has focus
            //if (this.container.find('input[name=daterangepicker_start]').is(":focus") || this.container.find('input[name=daterangepicker_end]').is(":focus"))
            //    return;

            //ignore dates that can't be selected
            if (!$(e.target).hasClass("available")) return;

            //have the text inputs above calendars reflect the date being hovered over
            var title = $(e.target).attr("data-title");
            var row = title.substr(1, 1);
            var col = title.substr(3, 1);
            var cal = $(e.target).parents(".calendar");
            var date = cal.hasClass("left") ?
                this.leftCalendar.calendar[row][col] :
                this.rightCalendar.calendar[row][col];

            if (
                this.endDate &&
                !this.container.find("input[name=daterangepicker_start]").is(":focus")
            ) {
                this.container
                    .find("input[name=daterangepicker_start]")
                    .val(date.format(this.locale.format));
            } else if (!this.endDate &&
                !this.container.find("input[name=daterangepicker_end]").is(":focus")
            ) {
                this.container
                    .find("input[name=daterangepicker_end]")
                    .val(date.format(this.locale.format));
            }

            //highlight the dates between the start date and the date being hovered as a potential end date
            var leftCalendar = this.leftCalendar;
            var rightCalendar = this.rightCalendar;
            var startDate = this.startDate;
            if (!this.endDate) {
                this.container.find(".calendar tbody td").each(function(index, el) {
                    //skip week numbers, only look at dates
                    if ($(el).hasClass("week")) return;

                    var title = $(el).attr("data-title");
                    var row = title.substr(1, 1);
                    var col = title.substr(3, 1);
                    var cal = $(el).parents(".calendar");
                    var dt = cal.hasClass("left") ?
                        leftCalendar.calendar[row][col] :
                        rightCalendar.calendar[row][col];

                    if (
                        (dt.isAfter(startDate) && dt.isBefore(date)) ||
                        dt.isSame(date, "day")
                    ) {
                        $(el).addClass("in-range");
                    } else {
                        $(el).removeClass("in-range");
                    }
                });
            }
        },

        clickDate: function(e) {
            if (!$(e.target).hasClass("available")) return;

            var title = $(e.target).attr("data-title");
            var row = title.substr(1, 1);
            var col = title.substr(3, 1);
            var cal = $(e.target).parents(".calendar");
            var date = cal.hasClass("left") ?
                this.leftCalendar.calendar[row][col] :
                this.rightCalendar.calendar[row][col];

            //
            // this function needs to do a few things:
            // * alternate between selecting a start and end date for the range,
            // * if the time picker is enabled, apply the hour/minute/second from the select boxes to the clicked date
            // * if autoapply is enabled, and an end date was chosen, apply the selection
            // * if single date picker mode, and time picker isn't enabled, apply the selection immediately
            // * if one of the inputs above the calendars was focused, cancel that manual input
            //

            if (this.endDate || date.isBefore(this.startDate, "day")) {
                //picking start
                if (this.timePicker) {
                    var hour = parseInt(
                        this.container.find(".left .hourselect").val(),
                        10
                    );
                    if (!this.timePicker24Hour) {
                        var ampm = this.container.find(".left .ampmselect").val();
                        if (ampm === "PM" && hour < 12) hour += 12;
                        if (ampm === "AM" && hour === 12) hour = 0;
                    }
                    var minute = parseInt(
                        this.container.find(".left .minuteselect").val(),
                        10
                    );
                    var second = this.timePickerSeconds ?
                        parseInt(this.container.find(".left .secondselect").val(), 10) :
                        0;
                    date = date.clone().hour(hour).minute(minute).second(second);
                }
                this.endDate = null;
                this.setStartDate(date.clone());
            } else if (!this.endDate && date.isBefore(this.startDate)) {
                //special case: clicking the same date for start/end,
                //but the time of the end date is before the start date
                this.setEndDate(this.startDate.clone());
            } else {
                // picking end
                if (this.timePicker) {
                    var hour = parseInt(
                        this.container.find(".right .hourselect").val(),
                        10
                    );
                    if (!this.timePicker24Hour) {
                        var ampm = this.container.find(".right .ampmselect").val();
                        if (ampm === "PM" && hour < 12) hour += 12;
                        if (ampm === "AM" && hour === 12) hour = 0;
                    }
                    var minute = parseInt(
                        this.container.find(".right .minuteselect").val(),
                        10
                    );
                    var second = this.timePickerSeconds ?
                        parseInt(this.container.find(".right .secondselect").val(), 10) :
                        0;
                    date = date.clone().hour(hour).minute(minute).second(second);
                }
                this.setEndDate(date.clone());
                if (this.autoApply) {
                    this.calculateChosenLabel();
                    this.clickApply();
                }
            }

            if (this.singleDatePicker) {
                this.setEndDate(this.startDate);
                if (!this.timePicker) this.clickApply();
            }

            this.updateView();

            //This is to cancel the blur event handler if the mouse was in one of the inputs
            e.stopPropagation();
        },

        calculateChosenLabel: function() {
            var customRange = true;
            var i = 0;
            for (var range in this.ranges) {
                if (this.timePicker) {
                    var format = this.timePickerSeconds ?
                        "YYYY-MM-DD hh:mm:ss" :
                        "YYYY-MM-DD hh:mm";
                    //ignore times when comparing dates if time picker seconds is not enabled
                    if (
                        this.startDate.format(format) ==
                        this.ranges[range][0].format(format) &&
                        this.endDate.format(format) == this.ranges[range][1].format(format)
                    ) {
                        customRange = false;
                        this.chosenLabel = this.container
                            .find(".ranges li:eq(" + i + ")")
                            .addClass("active")
                            .html();
                        break;
                    }
                } else {
                    //ignore times when comparing dates if time picker is not enabled
                    if (
                        this.startDate.format("YYYY-MM-DD") ==
                        this.ranges[range][0].format("YYYY-MM-DD") &&
                        this.endDate.format("YYYY-MM-DD") ==
                        this.ranges[range][1].format("YYYY-MM-DD")
                    ) {
                        customRange = false;
                        this.chosenLabel = this.container
                            .find(".ranges li:eq(" + i + ")")
                            .addClass("active")
                            .html();
                        break;
                    }
                }
                i++;
            }
            if (customRange) {
                if (this.showCustomRangeLabel) {
                    this.chosenLabel = this.container
                        .find(".ranges li:last")
                        .addClass("active")
                        .html();
                } else {
                    this.chosenLabel = null;
                }
                this.showCalendars();
            }
        },

        clickApply: function(e) {
            this.hide();
            this.element.trigger("apply.daterangepicker", this);
        },

        clickCancel: function(e) {
            this.startDate = this.oldStartDate;
            this.endDate = this.oldEndDate;
            this.hide();
            this.element.trigger("cancel.daterangepicker", this);
        },

        monthOrYearChanged: function(e) {
            var isLeft = $(e.target).closest(".calendar").hasClass("left"),
                leftOrRight = isLeft ? "left" : "right",
                cal = this.container.find(".calendar." + leftOrRight);

            // Month must be Number for new moment versions
            var month = parseInt(cal.find(".monthselect").val(), 10);
            var year = cal.find(".yearselect").val();

            if (!isLeft) {
                if (
                    year < this.startDate.year() ||
                    (year == this.startDate.year() && month < this.startDate.month())
                ) {
                    month = this.startDate.month();
                    year = this.startDate.year();
                }
            }

            if (this.minDate) {
                if (
                    year < this.minDate.year() ||
                    (year == this.minDate.year() && month < this.minDate.month())
                ) {
                    month = this.minDate.month();
                    year = this.minDate.year();
                }
            }

            if (this.maxDate) {
                if (
                    year > this.maxDate.year() ||
                    (year == this.maxDate.year() && month > this.maxDate.month())
                ) {
                    month = this.maxDate.month();
                    year = this.maxDate.year();
                }
            }

            if (isLeft) {
                this.leftCalendar.month.month(month).year(year);
                if (this.linkedCalendars)
                    this.rightCalendar.month = this.leftCalendar.month
                    .clone()
                    .add(1, "month");
            } else {
                this.rightCalendar.month.month(month).year(year);
                if (this.linkedCalendars)
                    this.leftCalendar.month = this.rightCalendar.month
                    .clone()
                    .subtract(1, "month");
            }
            this.updateCalendars();
        },

        timeChanged: function(e) {
            var cal = $(e.target).closest(".calendar"),
                isLeft = cal.hasClass("left");

            var hour = parseInt(cal.find(".hourselect").val(), 10);
            var minute = parseInt(cal.find(".minuteselect").val(), 10);
            var second = this.timePickerSeconds ?
                parseInt(cal.find(".secondselect").val(), 10) :
                0;

            if (!this.timePicker24Hour) {
                var ampm = cal.find(".ampmselect").val();
                if (ampm === "PM" && hour < 12) hour += 12;
                if (ampm === "AM" && hour === 12) hour = 0;
            }

            if (isLeft) {
                var start = this.startDate.clone();
                start.hour(hour);
                start.minute(minute);
                start.second(second);
                this.setStartDate(start);
                if (this.singleDatePicker) {
                    this.endDate = this.startDate.clone();
                } else if (
                    this.endDate &&
                    this.endDate.format("YYYY-MM-DD") == start.format("YYYY-MM-DD") &&
                    this.endDate.isBefore(start)
                ) {
                    this.setEndDate(start.clone());
                }
            } else if (this.endDate) {
                var end = this.endDate.clone();
                end.hour(hour);
                end.minute(minute);
                end.second(second);
                this.setEndDate(end);
            }

            //update the calendars so all clickable dates reflect the new time component
            this.updateCalendars();

            //update the form inputs above the calendars with the new time
            this.updateFormInputs();

            //re-render the time pickers because changing one selection can affect what's enabled in another
            this.renderTimePicker("left");
            this.renderTimePicker("right");
        },

        formInputsChanged: function(e) {
            var isRight = $(e.target).closest(".calendar").hasClass("right");
            var start = moment(
                this.container.find('input[name="daterangepicker_start"]').val(),
                this.locale.format
            );
            var end = moment(
                this.container.find('input[name="daterangepicker_end"]').val(),
                this.locale.format
            );

            if (start.isValid() && end.isValid()) {
                if (isRight && end.isBefore(start)) start = end.clone();

                this.setStartDate(start);
                this.setEndDate(end);

                if (isRight) {
                    this.container
                        .find('input[name="daterangepicker_start"]')
                        .val(this.startDate.format(this.locale.format));
                } else {
                    this.container
                        .find('input[name="daterangepicker_end"]')
                        .val(this.endDate.format(this.locale.format));
                }
            }

            this.updateView();
        },

        formInputsFocused: function(e) {
            // Highlight the focused input
            this.container
                .find(
                    'input[name="daterangepicker_start"], input[name="daterangepicker_end"]'
                )
                .removeClass("active");
            $(e.target).addClass("active");

            // Set the state such that if the user goes back to using a mouse,
            // the calendars are aware we're selecting the end of the range, not
            // the start. This allows someone to edit the end of a date range without
            // re-selecting the beginning, by clicking on the end date input then
            // using the calendar.
            var isRight = $(e.target).closest(".calendar").hasClass("right");
            if (isRight) {
                this.endDate = null;
                this.setStartDate(this.startDate.clone());
                this.updateView();
            }
        },

        formInputsBlurred: function(e) {
            // this function has one purpose right now: if you tab from the first
            // text input to the second in the UI, the endDate is nulled so that
            // you can click another, but if you tab out without clicking anything
            // or changing the input value, the old endDate should be retained

            if (!this.endDate) {
                var val = this.container
                    .find('input[name="daterangepicker_end"]')
                    .val();
                var end = moment(val, this.locale.format);
                if (end.isValid()) {
                    this.setEndDate(end);
                    this.updateView();
                }
            }
        },

        formInputsKeydown: function(e) {
            // This function ensures that if the 'enter' key was pressed in the input, then the calendars
            // are updated with the startDate and endDate.
            // This behaviour is automatic in Chrome/Firefox/Edge but not in IE 11 hence why this exists.
            // Other browsers and versions of IE are untested and the behaviour is unknown.
            if (e.keyCode === 13) {
                // Prevent the calendar from being updated twice on Chrome/Firefox/Edge
                e.preventDefault();
                this.formInputsChanged(e);
            }
        },

        elementChanged: function() {
            if (!this.element.is("input")) return;
            if (!this.element.val().length) return;

            var dateString = this.element.val().split(this.locale.separator),
                start = null,
                end = null;

            if (dateString.length === 2) {
                start = moment(dateString[0], this.locale.format);
                end = moment(dateString[1], this.locale.format);
            }

            if (this.singleDatePicker || start === null || end === null) {
                start = moment(this.element.val(), this.locale.format);
                end = start;
            }

            if (!start.isValid() || !end.isValid()) return;

            this.setStartDate(start);
            this.setEndDate(end);
            this.updateView();
        },

        keydown: function(e) {
            //hide on tab or enter
            if (e.keyCode === 9 || e.keyCode === 13) {
                this.hide();
            }

            //hide on esc and prevent propagation
            if (e.keyCode === 27) {
                e.preventDefault();
                e.stopPropagation();

                this.hide();
            }
        },

        updateElement: function() {
            if (
                this.element.is("input") &&
                !this.singleDatePicker &&
                this.autoUpdateInput
            ) {
                this.element.val(
                    this.startDate.format(this.locale.format) +
                    this.locale.separator +
                    this.endDate.format(this.locale.format)
                );
                this.element.trigger("change");
            } else if (this.element.is("input") && this.autoUpdateInput) {
                this.element.val(this.startDate.format(this.locale.format));
                this.element.trigger("change");
            }
        },

        remove: function() {
            this.container.remove();
            this.element.off(".daterangepicker");
            this.element.removeData();
        },
    };

    $.fn.daterangepicker = function(options, callback) {
        var implementOptions = $.extend(
            true, {},
            $.fn.daterangepicker.defaultOptions,
            options
        );
        this.each(function() {
            var el = $(this);
            if (el.data("daterangepicker")) el.data("daterangepicker").remove();
            el.data(
                "daterangepicker",
                new DateRangePicker(el, implementOptions, callback)
            );
        });
        return this;
    };

    return DateRangePicker;
});